interval 

Specifies the time interval between this time point and the one
designated by the since attribute. This attribute can only be interpreted meaningfully
in conjunction with the inttype attribute.

Attribute Information

Used By

Element mei:when

Source 

<xs:attribute name="interval">
  <xs:annotation>
    <xs:documentation>Specifies the time interval between this time point and the one designated by the since attribute. This attribute can only be interpreted meaningfully in conjunction with the inttype attribute.</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:union memberTypes="xs:time">
      <xs:simpleType>
        <xs:restriction base="xs:decimal">
          <xs:minInclusive value="1"/>
        </xs:restriction>
      </xs:simpleType>
    </xs:union>
  </xs:simpleType>
</xs:attribute>

Sample